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lehuyen
2 năm trước
Để làm khan rượu etylic có lẫn một ít nước người ta dùng CuSO4 khan, cụ thể là như thế nào thì mình vẫn chưa hiểu rõ lắm: cho thẳng CuSO4 khan vào, hay dẫn qua CuSO4 khan, hay blala... làm thế nào nhỉ các bạn?
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I. Combine each pairs of these sentences, using TOO : 1. Tom is short. He can’t touch the ceiling. ……………………………………………………… 2. Alice is very young. She can’t stay at home alone. ……………………………………………… 3. It’s very late. We can’t see a movie. …………………………………………………………… 4. She lives far from school. She can’t walk there. ………………………………………………… 5. It’s very cold. We can’t go swimming today. …………………………………………………… 6. The jacket is very small. He can’t wear it. ……………………………………………………… 7. Peter is very tired. He can’t study. ……………………………………………………………… 8. The pencil is very short. She can’t use it. ……………………………………………………… 9. The meeting is very important. We can’t miss it. ……………………………………………… 10. Sarah can’t take a day off. She was very busy. ………………………………………………… 11. You speak so fast that I can’t catch up with your words. …………………………………………………………………………………………………… 12. The piano was too heavy. We couldn’t hang it on the wall. …………………………………………………………………………………………………… 13. The test was very long. We can’t finish it in half an hour. …………………………………………………………………………………………………… 14. Mike was very busy. He couldn’t go to his aunt’s house warming party. …………………………………………………………………………………………………… 15. Some movies are very violent. Children shouldn’t watch them …………………………………………………………………………………………………… 16. He reached the station very late. He couldn’t catch the train. ……………………………………………………………………………………………………

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